Squeaking sound in Acura MDX

I have a 2003 Acura MDX. I hear a squeaking sound when I brake. It only happens when I have the air conditioner running. I live in Houston so the air is always on. I have had the brakes checked and I was told they were fine. Anyone have any thoughts on potential problems? Thanks for the help.

This is just a wild guess. A fair number of MDXs of that age have had the engine mounts go bad. If that happens, the engine could slide forward when you brake. Perhaps that’s putting stress on the belt somehow, which when combined with the extra load of the compressor is causing a squeak.